reading resistor with a digital multimeter

John Guarnieri's picture

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Joined: Feb 18, 2019

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reading resistor with a digital multimeter
February 18, 2019 - 2:45am

Hello All,
I am a new electronic enthusiast. I know nothing at this point. I am confused when I read a 4 band resistor with my digital multimeter. The resistor is not in a circuit
when I read the resistor orange - orange - brown - gold which is a 330 ohms I get .334 reading on my digital multimeter.

Why is it not 334? Instead of .334

If I read a 100 ohm resistor, brown - black - brown - gold,  I get 100 on my meter  or 99

I am not good at math.

Please advise.

Thank you

 

Aswinth Raj's picture

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Look for the unit on the multimeter
February 18, 2019 - 10:32am

If I read a 100 ohm resistor, brown - black - brown - gold,  I get 100 on my meter  or 99

Yes here it works good right!, but what you have to note here is that the value is displayed in ohms. Look for the symbol on the multimeter. 

 

when I read the resistor orange - orange - brown - gold which is a 330 ohms I get .334 reading on my digital multimeter.

Now here also the meter is working fine, you are just failing to notice it. The reason is now your multimeter is displaying the value in Kilo ohms. Look for the symbol on your mutimeter it will have a "K". 

So 1 Kilo Ohm is 1000 Ohms. Hence 0.334 Kilo ohms is 334 Ohms which is close to the actual value of 330 Ohm. Hope you got it clear now.

If you are new with multimters then you can read through this below tutorial 

https://circuitdigest.com/article/how-to-use-a-digital-multimeter

 

John Guarnieri's picture

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ohms
February 19, 2019 - 12:39am

Thank you for your quick reply Sir,

I did miss the k ohms on my meter as you stated.

I am still wondering why the meter went to k ohms instead of ohms since the difference betwen 100 ohms and 334 is not that great. I own an INNOVA 3320 meter I purchased on Amazon just so you know what I am using.

So why did my meter not stay on ohms instead of k ohms on a 334 ohm resistor. Sorry if I am slow in getting this.

Thank you

John 

Aswinth Raj's picture

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Depends on the meter
February 19, 2019 - 1:18pm

It depends on how the meter was programmed to show values. In your case the meter has been programmed to stay in "Ohms" mode if the value of resistor is eqaul or less than 100 Ohms. If greater then this value then the meter would get into " K Ohms" Mode

John Guarnieri's picture

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ohms
February 19, 2019 - 5:57pm

Thank you Sir that makes sense to me. Thank you for your help.

John

 

John Guarnieri's picture

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Schematics
February 19, 2019 - 6:17pm

Is it possible to get schematics for Dell computers? I am interested in a Dell optiplex 5050 micro form factor

Thank You for any help

John